.nav {
    height: 50px; 
    width: 100%;
    background-color: aquamarine;
    



 }
   h1{
     text-align: center;
     color: plum;
     font-size: 60px;
     


 }
 .nav li{
     height: 100%;
     width: calc(100%/4);
      background-color: chocolate;
      float: left;
      text-align: center;
      list-style: none;
      line-height: 50px;
      font-size: 15px;


 }
 .nav li:hover{
          background: burlywood;
          color: darkorange;
          font-size: 20px;

 }
  .he {
     height: 20px;
     width: 100%;
     background: rgb(107, 189, 168);
     text-align: right;
     font-size: 15px;

}
.wu{
    height: 300px;
    width: 100%;
    background: bisque;
    


}
 